Applications and selection
Equipment, brackets and general fastening assemblies with a specified thread engagement.
Check the required thread length, grip, pitch and head dimensions. Confirm the exact DIN or ISO reference and edition where interchangeability matters.
Dimensions & technical reference
DIN 933:1987
Fully threaded geometry, allowing for the specified under-head runout. Do not substitute ISO 4017 solely by diameter and length.
| Nominal size | P | k nominal | s max |
|---|---|---|---|
| M1.6 | 0.35 | 1.1 | 3.2 |
| M2 | 0.4 | 1.4 | 4 |
| M2.5 | 0.45 | 1.7 | 5 |
| M3 | 0.5 | 2 | 5.5 |
| (M3.5) | 0.6 | 2.4 | 6 |
| M4 | 0.7 | 2.8 | 7 |
| M5 | 0.8 | 3.5 | 8 |
| M6 | 1 | 4 | 10 |
| (M7) | 1 | 4.8 | 11 |
| M8 | 1.25 | 5.3 | 13 |
| M10 | 1.5 | 6.4 | 17 |
| M12 | 1.75 | 7.5 | 19 |
| (M14) | 2 | 8.8 | 22 |
| M16 | 2 | 10 | 24 |
| (M18) | 2.5 | 11.5 | 27 |
| M20 | 2.5 | 12.5 | 30 |
| (M22) | 2.5 | 14 | 32 |
| M24 | 3 | 15 | 36 |
| (M27) | 3 | 17 | 41 |
| M30 | 3.5 | 18.7 | 46 |
| (M33) | 3.5 | 21 | 50 |
| M36 | 4 | 22.5 | 55 |
Dimensional source: 164580 · DIN 933:1987 ↗. “—” means no value listed for this combination. P is thread pitch; min / max are dimensional limits. The selection above is not the full standard or a stock list.
ISO alternative: verify before substitution
| Nominal size | P | k nominal | s max |
|---|---|---|---|
| M1.6 | 0.35 | 1.1 | 3.2 |
| M2 | 0.4 | 1.4 | 4 |
| M2.5 | 0.45 | 1.7 | 5 |
| M3 | 0.5 | 2 | 5.5 |
| (M3.5) | 0.6 | 2.4 | 6 |
| M4 | 0.7 | 2.8 | 7 |
| M5 | 0.8 | 3.5 | 8 |
| M6 | 1 | 4 | 10 |
| (M7) | 1 | 4.8 | 11 |
| M8 | 1.25 | 5.3 | 13 |
| M10 | 1.5 | 6.4 | 16 |
| M12 | 1.75 | 7.5 | 18 |
| (M14) | 2 | 8.8 | 21 |
| M16 | 2 | 10 | 24 |
| (M18) | 2.5 | 11.5 | 27 |
| M20 | 2.5 | 12.5 | 30 |
| (M22) | 2.5 | 14 | 34 |
| M24 | 3 | 15 | 36 |
| (M27) | 3 | 17 | 41 |
| M30 | 3.5 | 18.7 | 46 |
| (M33) | 3.5 | 21 | 50 |
| M36 | 4 | 22.5 | 55 |
Dimensional source: 164580 · ISO 4017:2022 ↗. “—” means no value listed for this combination. P is thread pitch; min / max are dimensional limits. The selection above is not the full standard or a stock list.
Catalog inquiry range: M6 - M48. Availability, lengths, grades and finishes are confirmed by quotation. Sizes outside the cited reference table require the applicable standard dimensions or an approved drawing. Quote the exact standard and edition; DIN, ISO and U.S. references are not automatically interchangeable.
Materials, surface finishes and standards
Materials for this series: Carbon Steel, Stainless Steel. Surface finishes: Black Oxide, Zinc Plated, HDG. Compatibility between the grade, finish and operating environment needs to be confirmed.
For titanium, nickel alloy or other non-ferrous requirements, include the exact material grade and drawing. Required mechanical properties, inspection documents and traceability should be stated in the inquiry.
Related U.S. references for hex screws. Confirm full-thread requirements, thread series, head geometry and grade. Standards from different systems can vary in dimensions, threads, product scope and test requirements. Confirm the exact designation and edition in the quotation.
Ordering standard
DIN 933:1987; ISO 4017:2022
United States references for a separate inquiry: ASME B18.2.1 (inch); ASME B18.2.3.1M (metric). Confirm the exact form, thread system and drawing before quoting.
What to send for a quotation
- Fully threaded hex bolts or your part number, with the relevant standard and edition.
- Exact dimensions, thread details, quantity and any critical tolerances.
- Material grade, surface finish, inspection requirements and delivery destination.
- For customization, a drawing revision and a description of the mating assembly.
Common questions about fully threaded hex bolts
Can DIN 933 and DIN 931 be used interchangeably?
They represent different thread-length configurations. Compare the shank, threaded length and relevant dimensions before replacing one with the other.
Can I request a size or material outside this listing?
Yes. Send the required dimensions and exact material grade for review. A quotation is needed to confirm feasibility, price and lead time.